QK025K6TP

Triacs Overview

The Littelfuse QK025K6TP is a bidirectional triac belonging to the Qxx25xx series, designed for high-reliability AC power control applications. It features an RMS on-state current of 25 A and supports non-repetitive peak currents of 208 A or 250 A depending on the specific rating configuration. The device offers a rated repetitive off-state voltage (VDRM) of 800 V with a maximum leakage current of 10 uA at VDRM. Key electrical parameters include an on-state voltage of 1.8 V, a maximum holding current of 100 mA, and gate trigger specifications of 2.5 V and 80 mA. It operates within a temperature range of -40 C to +125 C and utilizes a through-hole SMTO-218 package.

Triacs Feature Summary

• High-voltage isolation capability suitable for demanding AC line protection environments
• Robust thermal performance supporting operation up to 125 C in compact through-hole packaging
• Sensitive gate drive requirements facilitating direct interface with standard logic circuits

Triacs Applications

• AC motor speed control systems
• Solid-state relay implementations
• Industrial heating element regulation

Triacs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer's part number and date codes against official Littelfuse documentation. Ensure the received units match the specified 800 V rating and SMTO-218 package type. Confirm compliance with relevant environmental standards as indicated in the product datasheet before integration into final assemblies.

Triacs Selection Notes

Select this component when an 800 V blocking voltage is required rather than higher ratings like 1000 V found in similar series members. The 25 A RMS current capacity suits moderate power loads. Consider the specific gate trigger characteristics for driver compatibility. Verify that the through-hole mounting style aligns with the printed circuit board design constraints.

Triacs Part Context

This triac belongs to the Qxx25xx family from Littelfuse, which groups devices sharing common current handling capabilities but varying in voltage ratings. While related models like the QK025K6 offer 1000 V ratings, the QK025K6TP specifically targets 800 V applications. This differentiation allows designers to optimize cost and performance based on exact system voltage requirements without over-specifying blocking capabilities.

Triacs Replacement Considerations

Direct substitutes must maintain the 800 V VDRM, 25 A IT(RMS), and SMTO-218 package. Verify equivalent gate trigger currents and voltages to ensure circuit compatibility. Check for any pinout differences or thermal resistance variations if replacing with components from other manufacturers.